Photosensitive composition containing a polyhalogenated initiator and a cumulene dye former

A composition of matter useful in photochemical reproduction comprising a cumulene compound having the general formula:

• ##SPC12##
• wherein n= 1-6;
• and R.sub.1 and R.sub.2 are the same or different alkyl or aryl radical;
• an organic polyhalogenated initiator solid at room temperature and is capable of promoting free radical reaction with said cumulene compound upon exposure to light;
• which
• one or more solvents suitable to dissolve the cumulene compound and the organic polyhalogenated initiator.

A composition useful in photochemical reproduction comprising:

• a bisbutatriene compound having the general formula:
• ##SPC13##
• in which R.sub.1 and R.sub.2 are methyl, ethyl or phenyl;
• an organic polyhalogenated initiator solid at room temperature and is capable of promoting free radical reaction with said cumulene compound upon exposure to light;
• and
• one or more solvents suitable to dissolve the bisbutatriene compound and the organic polyhalogenated initiator.

A composition useful in photochemical reproduction comprising:

• a butynediol compound having the general formula:
• ##SPC14##
• wherein R.sub.1 and R.sub.2 are the same or different alkyl or aryl radical and each ##EQU9## group can be any other position on the benzene ring;
• an organic polyhalogenated initiator solid at room temperature and is capable of promoting free radical reaction with said cumulene compound upon exposure to light;
• and
• one or more solvents suitable to dissolve the butynediol compound and the organic polyhalogenated initiator.